Well done to craigsa for noting that it is some sort of fig , and then to Senyetse for nailing the answer , although you could have just stopped at strangler fig , as it is not a sycamore fig.

I would say you guys are close enough to the location , and it is just north of the Ntomeni spruit , where the river goes past the main tar road .

This is actually called the Strangler fig , or more commonly known as the "Common wild fig" , which very often starts life as a strangler before eventually overcoming its host , and standing on its own .
This one has grown up the trunk of an old leadwood , and it would be difficult to say if it managed to kill the leadwood , or if it just used the dead stump considering leadwood stumps stand so long.